2 * DOS interrupt 26h handler
4 * Copyright 1997 Andreas Mohr
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include "wine/debug.h"
32 WINE_DEFAULT_DEBUG_CHANNEL(int);
35 /***********************************************************************
38 * Write raw sectors to a device.
40 BOOL DOSVM_RawWrite(BYTE drive, DWORD begin, DWORD nr_sect, BYTE *dataptr, BOOL fake_success)
42 WCHAR root[] = {'\\','\\','.','\\','A',':',0};
46 h = CreateFileW(root, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
48 if (h != INVALID_HANDLE_VALUE)
50 SetFilePointer(h, begin * 512, NULL, SEEK_SET );
51 /* FIXME: check errors */
52 WriteFile( h, dataptr, nr_sect * 512, NULL, NULL );
55 else if (!fake_success)
62 /**********************************************************************
63 * DOSVM_Int26Handler (WINEDOS16.138)
65 * Handler for int 26h (absolute disk read).
67 void WINAPI DOSVM_Int26Handler( CONTEXT86 *context )
69 WCHAR drivespec[4] = {'A', ':', '\\', 0};
70 BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegDs, context->Ebx );
74 drivespec[0] += AL_reg( context );
76 if (GetDriveTypeW( drivespec ) == DRIVE_NO_ROOT_DIR ||
77 GetDriveTypeW( drivespec ) == DRIVE_UNKNOWN)
80 SET_AX( context, 0x0201 ); /* unknown unit */
84 if (CX_reg( context ) == 0xffff)
86 begin = *(DWORD *)dataptr;
87 length = *(WORD *)(dataptr + 4);
88 dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context,
89 *(WORD *)(dataptr + 8),
90 *(DWORD *)(dataptr + 6) );
94 begin = DX_reg( context );
95 length = CX_reg( context );
98 TRACE( "abs diskwrite, drive %d, sector %ld, "
99 "count %ld, buffer %p\n",
100 AL_reg( context ), begin, length, dataptr );
102 DOSVM_RawWrite( AL_reg( context ), begin, length, dataptr, TRUE );
103 RESET_CFLAG( context );